Heater switch



Feb. 16, 1937. H. HUBBELL, JR. ET AL 2,070,599

HEATER SWITCH Filed Dec. 8, 1933 2 Sheets-Sheet 1 INVENTOR 5 ATTORNEY? Feb. 16, 1937. HUBBELL, JRL. ET AL 2,070,599

HEATER SWITCH Filed Dec. 8, 1933 2 SheetsSheet 2 5 "W 5 52 5 32 @MJ 1 2 ATTORNEYj Patented Feb. 16, 1937 UNITED STATES HEATER SWITCH Harvey Hubbell, Jr., and Charles E. Avery,

BridgeporhConn assignors to Harvey Hubbell, Incorporated, Bridgeport, Conn., a corporation of Connecticut Application December 8, 1933, Serial No. 701,458

16 Claims.

This invention relates to new and useful improvements in electric switches and has particular relation to a heater switch.

An object of the invention is to provide a heater switch wherein the binding posts may be arranged in a straight row whereby the switch may be easily wired.

Another object is to provide a magnetic switch having a much easier action than the usual rotary switch.

An additional object is to provide a heater switch of generally improved construction including many features adapting it for installation and for easy and convenient operation.

In general the invention includes a switch including a pair of contacts, a slidably mounted magnet adapted to be positioned to cause said contacts to engage, and manually operable means for sliding said magnet. I

It also comprises a switch including a plurality of pairs of switch elements of which each pair includes a stationary and a movable switch element, each of said movable switch elements including a piece of magnetic metal, and a slidably mounted magnet adapted to be positioned to attract a selected movable switch element to cause it to move into circuit closing position.

It further comprises a switch including a sta tionary and a movable contact, a magnet shiftable into operative relation to the movable contact to attract it and move it into circuit closing engagement with said stationary contact, said movable contact being associated with means whereby it is moved away from said stationary contact on movement of said magnet out of operative relation with the movable contact. The device also includes means movable with said magnet to engage'said movable contact and force it out of engagement with the stationary contact if the contacts do not separate under action of said first mentioned means when the magnet is movedout of operative relation to said movable contact. I

Other objects and advantages will become apparent from a consideration of the following de- 7 tailed description taken in connection with the accompanying drawings wherein a satisfactory embodiment of the invention is shown. However, it will be understood that the invention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claims.

In the drawings:

Fig. 1 is a front elevational view showing a of Fig. 6;

Fig. 8 is a sectional view taken substantially 1 along the line 8-8 of Fig. 6;

Fig. 9 is an enlarged detail sectional view, the view being taken substantially along the line 9-9 of Fig. 4

Fig. 10 is an elevational of the cover plate and the the magnet being omitted;

Fig. 11 is a sectional view taken substantially along the line I |-I I of Fig. 10;

Fig. 12 is a rear view of the'magnet and a switch 25 element carried thereby;

Fig. 13 is a front View of the magnet showing a feeler spring and a kick-off means carried thereby;

Fig. 14 is a detail sectional view taken substan- 3o tially along the line l4l4 of Fig. 9;

Fig. 15 is an elevational view showing the relation between the magnet and a pair of contacts with the latter held inengagement by the magnet;

Fig. 16 is a view somewhat similar to Fig. 15 35 but with the magnet moved out of operative relation with the switch elements;

Fig. 17 is an elevational view showing the contacts at the upper end or front of the switch, parts being broken away, that other parts may 40 be better illustrated; I

Fig. 18 is an elevational view illustrating the' manner in which the switch handle may be shifted for more convenient manipulation; and

Fig. 19 is a wiring diagram showing how this switch may be connected to control a multiple unit range heater. 7

Referring in detail to the drawings, the improved switch as here shown includes a hollow body of insulating material generally designated 20 open at its outer or front side and including an inner or rear wall 2| opposite said open side. The body also includes side walls 22 and 23, bottom wall 24 and atop wall 25. The wall 25 is cut away or does not extend out the same disview of the inner side 20 parts carried thereby,

tance as do the side walls and the bottom wall and is relatively thick to provide a mounting surface or portion 25. On this surface 25 there are disposed four binding posts 21, 28,29 and 30. Binding post 21 includes a base portion 3| clamped against or drawn against surface 25 as by means of a screw 32 passing through the thickened top wall 25 of the body from the underside thereof. This-base 3| also includes the extension 33 into which is threaded a screw 34 and the purpose of this extension and screw will later be more fully set forth.

Binding post 28 includes a base 35 through the end portions of which extends screws 35 and 31 the said screws being threaded into said base 35 0f the binding post and drawing the base against the surface 25. Screw 31 has an added function as will later appear. Intermediate its end portions binding post base 35 carries an extension 38 (Figs. 16 and 17) which extends forwardly from said base and is then turned upwardly providing an arm 39 carrying a contact 48. (See Figs. 15 and 16.) Binding post 29 includes a base portion 4| (Figs. 4 and 17) into which are threaded screws 42 and 42a. passing through the rear wall 2| of the body and this base 4| includes an extension 43 carrying a forwardly extending arm 44 on which is mounted a contact 45. In spaced relation to this structure base 4| carries an extension 45 the outer end portion of which is bent to provide a forwardly extending arm 41 and the latter carries a contact 48. Binding post 38 is of substantially the same construction as binding post 21 and includes a base portion 49 secured in place as by a screw 50 and the said base includes an extension 5| the purpose of which will later be set forth and through said extension is threaded a screw 52.

A movable switch element is associated with each of the binding post contacts 40, 45 and 48 and these switch elements are designated 53, 54 and respectively. These switch elements are all connected to a bus bar 55 and each switch element includes a laterally extending portion 51 secured to the bus bar as by rivets or the like 58 and each switch element further includes an upwardly or outwardly extending spring arm 59 against the forward face of which at a point above the bus bar there is disposed'a block of insulating material 58 and against the rear face of the upper portion of said arm there may be" disposed an insulator 5|. Disposed against the forward face of insulator- 50 is an armature or magnetic piece 52 and a rivet 53 passes through said armature, the insulators. 55 and 5| and the arm 59 while a second rivet 54 may secure the armature or magnetic piece 52 to an upwardly extending portion of the insulator 58. Further, the arm 59 may include extensions 55 having their end portions 55 bent about the lower portion of the insulator 58.

Each arm 59 includes laterally extending por tion 51 and each of said portions carries a contact'58 and it will be noted particularly by reference to Figs. 15 and 16 that said extensions 51 are offset rearwardly with respect to the arm and provide spring mountings for the contact 58. Further, it will be apparent that the arms 59 may be of resilient or spring metal and may be flexed, and it is through flexing of these arms that the respective contacts 58" are moved into engagement with the binding post contacts 48, 45 and 48. The resiliency of the arms tends to move the contacts 58 away from the stationary contacts and carry the insulator. 5| against the base of its associated binding post, which serves as a back stop. Means are provided for adjusting the tension of spring arms 59, and to this end bus bar 55 is provided with an upturned extension 59 disposed at the outer side of the spring-arm 59 of switch element 55 and said extension 59 carries a screw 1|) adjustable through the extension and at its inner end bearing against the spring arm of switch element 55. A second extension 1| carried by the bus bar includes laterally extending arms 12 and 13 through which are threaded screws 14 and 15 and it will be apparent from Fig. '6 that on adjustment of the screw 14 the spring arm of switch element 54 may be adjusted to proper tension, while on adjustment of the screw 15 the spring arm of switch element 53 will be adjusted.

Bus bar 55 includes an extension 15 and the extension 5| of the base of the binding post 38.

through the bus bar extension and the extension of the base of the binding post 30 and serves to draw said parts into engagement whereby to provide a good electrical connection. Since the switch elements are all secured to the bus bar the latter provides a convenient means for mounting the switch elements in the body and to this end the bus bar is disposed against the inner surface of the rear wall 2| of the body immediately inwardly of the thickened wall 25 and is secured in place by the screw 52 above referred to and by a second screw 11 also extending through the wall 2| of the body. In connection with these various screws passing through the rear wall 2| of the body it will be understood that all such screws preferably have their heads disposed in recesses which may be filled with sealing wax whereby there is little danger of short circuiting between them.

Arranged in spaced. grooves in the outer surface of the wall 2| are'a pair of strap-like con- (11165015 18 and 19 (Fig. 3) and it will be noted that the strap member 18 includes a portion se; cured under the head, of the screw 31 and the member is additionally secured in place as by a.

rivet 88 passing through wall 2| and strap member 18 includes the portion 8| passed forwardly through an opening in the rear wall 2| of the body while strap member 19 includes a portion 82 passed forwardly through a similar opening in said wall of the body. These portions 8| and 82 are preferably somewhat bowed and'they extend above the inner surface of the wall 2| of the body and provide spring contacts for closing a shunt circuit between the binding posts 21 and 28- in a manner and for a purpose later to be described.

Disposedacross the open side of the body 28 is a plate or closure 83 which may be of metal or other material as desired, and this plate may include suitable lateral extensions 85 through which are passed securing screws 84 passing through the body to attach the plate thereto. Also, the plate includes rearwardly extending side arms 85 two of said arms being carried by each edge porticn of the plate or closure 83 and these arms extend into the hollow body 28, and the arms at the respective edges are connected by integral portions 81. A pair of spaced rods 89 .and 98 are arranged within the body. and the arms are sunstrap member 19 includes a portion disposed unthe closure plate 83 has ported in parallel relation and have their end portions disposed in openings in the inner end portions of the arms 86. These rods 89 and 90 need not be secured to the arms but are held in position by the inner surfaces of the side walls 22 and 23, which surfaces the end of the bars may engage at the respective sides of the enlargements 88.

Mounted to slide on the rods 89 and 90 is-a magnet 9| here shown as a horseshoe magnet, and this magnet is clamped between a pair of brass plates 92 and 93, (Figs. 13 and 14) which plates are secured together as by a screw 94. These plates also carry tubular bushings 95 through which the rods 89 and 90 extend and provide bearings on the rods. Such bushings are preferably of brass or other non-magnetic metal. Bushings 95 have a sliding fit on the rods 89 and 90 whereby the magnet may be slid along said rods to any desired position. -Also, as these rods are located below the switch elements 53, 54 and 55 the magnet may be slid along the rods into an operative position with relation to any selected switch element.

Disposed against the inner armof the magnet 9| is a piece of insulating material 96, the said material being held in place as by lugs 91 (Fig. 12) which latter are extensions of the plates 92 and 93. Disposed against the rear side of the insulation 96 is a contact bridging piece 98 held in place as by having extensions 99 turned over the edge portions of the insulator 96. The purpose of this bridging piece 98 will later be fully set forth.

On the forward arm of the magnet there is arranged a. piece of insulating material I00 (Fig. 9) at its forward end including a head or kickoff I0l. (Figs. 4, 9, 13 and 15.) Over this piece I00 is a piece of brass or other non-magnetic material I02 held in place as by clamping fingers I03 (Fig. 13) comprising extensions of the plates or walls 92 and 93. the inner of these feeler spring tion of the magnet and transversely of the kickoff head II'II whereby the spring includes end portions I06 and I0! each having an outwardly pressed nub or tit I08. This feeler spring is secured against movement relative to the magnet as is also the kick-off IOI.

At its rearward side adjacent one of its edges secured to 'it a strap I09 (Figs. 10 and 11) the strap being secured in place as by rivets or the like-I l0, .and this strap spans a cut-away portion III of the plate. Secured at one end to an intermediate portion of the ,strap I 03 as by a rivet,.pln or the like H2 is a bar or arm I I3 and this bar extends upwardly to the rear of plate 83 and at its free end is slotted or kurfed as at H4 to receive a roller H5 on the pin or post I 04. It will be apparent that owing to the pin and slot connection between the bar and the magnet swinging movement of the bar will result in a sliding movement of the magnet along the rods 89 and 90.

Disposed at the other side of plate 83 is a handle H5, and this handle includes a portion Ill (Fig. 11) passing through the above mentioned cut-away portion of plate 83 and connected on the pivoted end portion of bar I3. This portion III of the handle is slotted in its rear' side to receive the bar H3, and a screw or other fastening means H8 is passed through the handle and threaded into an opening in the bar ineccentric relation to the pivot l2 so that the pin will serve to connect the bar and handle in such manner that turning movement of the handle will result in movement of the bar and a sliding movement of the magnet on the rods 89 and 90.

As shown in the first figures of the drawings, the binding posts are all arranged in a row adjacent one edge of the body of the switch. This layout provides for the easy installation of a switch on a stove or the like in that it is much easier to wire the same when the binding posts are arranged in a row adjacent one edge of the switch body. In the rotary type of switches the binding posts are located around the periphery of the switch and in some cases-are quite inaccessible because of being close to a side wall of the stove or the like. In the present instance the binding posts may be located either at the upper or lower edge of the body since the body may be mounted either side up as is most convenient.

In order that the handle H6 may be properly located should the switch be mounted with the binding posts at its lower edge the position of said handle H6 may be reversed. This is accomplished by loosening the screw H8 and then raising the handle off the switch, turning the handle about to have it extend in the opposite direction and then disposing the handle with its portion H1 straddling the bar H3. Screw H8 is thenagain tightened, this time being threaded into an opening H9 in the rear end portion of the bar H3. In this modified position the switch handle will be disposed as shown in Fig. 18 of the drawings.

In the operation of the device the handle HE is shifted to slide the magnet to dispose the latter in operative relation with any selected one of the movable switch elements 53, 54 and 55. As the magnet is disposed opposite one of these elements it attracts the magnetic piece or armature 62 of said element and draws the element inwardly flexing the spring arm 59. This will result in the contact 08 of the chosen switch element engaging the associated contact (either 40, 45 or 49) of one of the binding posts. As soon as the magnet is shifted out of operative relation with any particular switch element the spring arm of the element serves to return it to normal position or in circuit opening position. Should the contacts freeze together, then the kick-off IOI will function to positively force the movable switch element away from the stationary switch element or the switch element of which a binding post forms a part.

For example, should the contact 68-01 switch element 53 freeze on the contact 40 of binding post 28 the kick-off I 0| will serve to separate said contacts when the magnet is moved out of operative relation with them. Referring to Figs. 15 and 16, it will be noted that in Fig. 15 the magnet is in operative relation with the switch element 53 and that contact 68 is engaging contact 40. Now, when the magnet is moved out of operative relation with switch element 53, as to the position shown in. Fig. 16, the contacts should separate owing to the action of spring arm 59. However, should they not separate then the enlargement or cam I20 of the kick-off IOI will engage the projecting end 62a the magnetizable piece 62 of switch element 53 and force it upwardly resulting in positive separation of contacts 60 and 40. Should it be that one of the other switch elements fails to move to open position when released then the opposite enlargement or cam I2l of the kick-off may function. That is, one or the other of the enlargements I20 and I2! will always function to release a pair of contacts which have frozen together. I

When the magnet is in inoperative position, that is when the switch is off, the said magnet is disposed opposite a keeper I22 comprising a bar of iron or steel secured in place as by having a shank I23 pass through the bottom wall 2I of the body and secured as by a nut I24. The magnet need not be in actual engagement with this keeper but may be disposed in relatively close relationship -to it, whereby the magnetic circuit will be closed and the magnet retains its magnetisr'n. a

In Fig. 19 the circuit is shown, and in this figure a multiple heater element is indicated comprising two coils or elements I25 and I25a, and it will be noted that by a lead I28 binding post 21 is connected with one end of said element I25 and that by a lead I21 binding post 28 is secured to or connected with the outer end of the element 1250.. Further, by a lead I 28 binding post 29 is connected with the center or inner ends of the heater elements. The power line comprises wires I29 and I38 the former of which is connected with binding post 30 while the latter is connected with binding post 21. As will also be seen from this figure element 18 is connected to binding post 28 while element 19 is connected to binding post 21.

From this it will be seen that when the magnet is moved into operative relation with switch element 53 current will be passed through both heater elements I25 and I250. entering by the line I21 from bus bar 56 and switch 53 and leaving by the line I26. The heater elements will be in series and since theyoifer high resistance will develop but a relatively low degree of heat. When the magnet is moved into operative'relation with switch element 54, a medium degree of heat will be obtained since current will be supplied to the center of the heating element through wire I28 and the other side of the circuit is represented by wire I26, the wire I21 being dead since switch element 53 is open. In this position elee ment I25 only is heated and to its full heat giving a medium heat for the multiple element. On the magnet being shifted to attract switch element 55 the bridging piece 98 on the back of the magnet (Figs. 9 and 12) is moved into position spanning the contacts 8I and 82 so that a shunt circuit is established between the binding posts 21 and 28. Also, switch element 55 having been moved to circuit closing position current will be supplied to the inner ends of both heater elements through the wire I28 and the heater elements will then be connected in parallel. With this last arrangement both elements are heated to maximum temperature and full heat will be developed. The circuit for heater element I25 is represented by bus bar 56, switch element 55, binding post 29, wire I28, and wire I26, to binding post 21. The circuit for the other element I25a is represented by the bus bar, switch element 55, wire I28, wire I21, conductor strip 18, bridging piece 98, and conducting strip 19 to the binding post 21.

The present heater switch has a much easier action than the rotary switch commonly used. Handle I I6 is very easily turned and its full range of movement in a series parallel three-heat switch arrangement is only '60 of an are. As pointed out above, the switch is not diflicult to wire and the handle or hand piece II6 may have its position reversed so that it will be properly located for operation irrespective of whether the binding posts are located at the upper or lower edge of the switch body. The invention is notlimited to the use of a pivoted handle for sliding the magnet since a simple slida'ble handle moving with the magnet may be employed.

When the magnet reaches its various positions, the small-bulges or tits I88 of the feeler spring snap into depressions or recesses I3I formed in the under side of the closure 'or cover plate 83. Therefore, the frictional resistance of these bulges on the rear surface of plate 83 to movement of the handle'is suddenly increased as the magnet reaches an operative position with relation to the switch element controlling the medium heating circuit and as the magnet .comes opposite its keeper I22. The operative position of the magnet with relation to the other switch elements is represented by the limit of movement of the magnet toward the opposite side of the body. ing plate or piece 98 is so located that it completes the shunt circuit just prior to the closing of the circuit by the switch element 55 and such shunt circuit remains closed until the switch element 55 is released.

Having thus set forth the nature of our invention, what we claim is:

1. In a switch, a body of insulating material, a pair of normally spaced switch elements mounted on said body, a magnet in said body, guides within said body and mounting the magnet for bodily sliding movement between an operative and an inoperative position relative to said switch elements, a hand piece at the outer side of said The bridgbody, means connecting the hand piece and magnet whereby the hand piece is operable to slide the magnet on said guides, and said magnet when in operative position relative to said switch elements adapted to cause them to engage.

2. In a switch, a body, a stationary switch ele-'- ment in the body, a movable switch element in the body and normally spaced from said stationary switch element, a horse shoe magnet in the body, a pair of non-magnetic plates clamped against the sides of said magnet and spanning the space between the arms thereof, a pair of spaced rods in said body and passing through said plates between the arms of the magnet and slidably mounting the magnet on the body, said magnet slidable on said rods between an operative .and an inoperative position relative to said switch elements, means for sliding the magnet, an armature connected to the movable switch element, and said magnet when.in operative position relative to said switch elements adapted to attract the armature to shift the movable switch element to cause it to make contact with the stationary switch elehaving been moved from normal position, a magnet in said body, a guide within "said body and mounting the magnet for bodily sliding movement. between an operative and an inoperative position relative to said switch elements, a hand piece at the outer side of the body, means connecting the hand piece and magnet whereby the hand piece is operable to slide the magnet on said guide, and said magnet when in operative position relative to said switch elements adapted to attract the movable switch element to cause it to move and make contact with the stationary switch element.

' said rod on pivotal said magnet when 4. In a switch, a hollow body, a pair of normally spaced switch elements mounted in said body and of which one is movable into engagement with the other to close a circuit, a rod within and extending across said body transversely of said switch elements, a magnet within said body and slidable along said rod between an operative and an inoperative position relative to said switch elements, a hand piece at the outer side of said body and connected with the magnet to slide the same along said rod, and said magnet when in operative position adapted to attract said movable switch element to bring the switch elements into circuit closing engagement.

5. In a switch, a hollow body having an open side, a pair of normally spaced switch elements mounted in said body and of which one is movable'into engagement with the other to close a circuit, a closure on the open side of said body, a pair of spaced parallel rods carried by said closure and arranged Within said body, a magnet slidable on said rods betweem an operative position and an inoperative position relative to said switch elements, means at the outer side of said body and connected with the magnet for sliding the same, and said magnet whenin operative position adapted to attract one of said switch elements to bring the switch elements into circuit closing engagement.

6. In a switch, a hollow body having an open side, a pair of normally spaced switch elements mounted in said body and of which one is movable into engagement with the other to close a circuit, a closure on the open side of said body, a rod carried by said closure and arranged within said body, a magnet slidable on said rod between'an operative position and an inoperative position relative to said switch elements, a handle at the outer side of said body, means pivotally mounting the handle, means connecting the handle and magnet for sliding movement of the latter along movement of the handle, and in operative position adapted to attract one of said switch elements to bring the switch elements into circuit closing engagement.

7. In a switch, a hollow body having an open side, a pair oi normally spaced switch elements mounted in said body and of which one is movable into engagement with the other to close a circuit, a closure on the open side of said body, a rod carried by said closure and arranged within said body, a magnet slidable on said rod between an operative position and an inoperative position relative to saidswitch elements, a hand piece at the outer side of said closure, means pivotally mounting said hand piece, a bar within said and said bar whereby as said hand piece is given a pivotal movement the magnet is shifted along said rod, and said magnet when in operative position adapted to attract one 'of said switch elements to bring the switch elements into circuit closing engagement.

8. In an electric switch, a body, a pair of normally spaced switch elements of which one is. movable toward and from the other to close and open a circuit, said switch elements mounted by said body, a magnet shiftable between an operative and an inoperative position in the former of which it attracts the movable switch element to cause it to move to circuit closing position, and a feeler means to indicate when said magnet is in operative position, said feeler means funcand said spring adapted to tioning by increasing the frictional resistance to further movement of the magnet.

9. In an electric switch, a body, a pair of normally spaced switch elements of which one is movable toward and fromthe other to close and open a circuit, said switch elements mounted by said body, a magnet shiitable between an operative and an inoperative position in the former of which it attracts the movable switch element to cause it to move to circuit closing position, a closure on said body, an operating handle located at the outer side of said closure and connected with said magnet to shift the same, said closure having a recess therein, a feeler spring movable in accordance with movement of the magnet, snap into said recess when said magnet is moved to operative position.

10. In a switch, a hollow body having an open side, a pair of normally spaced switch elements mounted in said body and of which one is movable into engagement with the other to close a circuit, a removable closure on the open side of said body, a rod carried by said closure and arranged within said body, a magnet slidable on said rod between an operative position and an,

tract one of said switch elements to bring the switch elements; into circuit closing engagement, said closure having a recess therein, a feeler spring on the pin of said pin and slot connection and movable in accordance with movement of said magnet, and said spring adapted to snap into said recess when said magnet is moved to operative position.

11. In a switch, a body, a stationary switch element in said body, a movable switch element in the body and normally spaced from said stationary switch element and including spring means whereby it automatically returns to normal position on being released after having been moved from normal position, a magnet, means mounting the magnet for movement in the body between operative and inoperative positions relative to said switch elements, means for shifting said magnet, said magnet when in operative position adapted to attract the movable switch element to cause it to move to make contact with the stationary switch element, a kick-oil means movable in accordance with movement of the magnet, and said kick-off means including a cam portion to engage said-movable switch element and force it away from the stationary switch element should the movable switch to open the circuit on movement of the magnet out of operative position.

12. In a switch, a body, a stationary switch element insaid body, a movable switch element in said body and normally spaced fromsaid station ary switch element and including spring means element fail to move said kick-off means including acam portion to enary switch element, a kick-off means movable in accordance with movement of the magnet, and

gage said movable switch element and force it "away from the stationary switch element should the movable switch element fail to move to open the circuit on movement of the magnet out of operative position.

13. In a switch, a body, a stationary switch element on said body, a movable switch element on said body and normally spaced from said stationary switch element and including spring means whereby it automatically returns to normal position on being released after having been moved from normal position, a magnet, means mounting the magnet for movement in the body between operative and inoperative positions relative to said switch elements, means for shifting said magnet, said magnet when inoperative position adapted to attract the movable switch element and move it into contact with the stationary side, a pair of normally spaced switch elements in said body and of which one is'movable into engagement with the other to close a circuit, a closure on the open side of said body, two pairs of arms carried by said closurev and extending into said body, parallel rods carried one by each of said pair of arms, a pair of connecting portions each connecting an arm of one of said pair of arms with an arm of said other pairs whereby to brace said arms, a magnet slidable on said rods between operative and inoperative positions relative to said switch elements, means to slide said magnet on said rods, and said magnet when in operative position adapted to attract one of said switch elements to bring the switch elements into circuit closing engagement.

15. In a switch, a body, a series of binding posts arranged in a substantially straight row along one edge of said body, a contact carried by each of ,said binding posts, a series of movable switch elements arranged in substantially a straight row and associated-one with each of said binding posts, means whereby said switch elements. are normally spaced from the contacts of the binding posts and are returned to normal position on being released after having been moved, a magnet, means slidably mounting the magnet in said body for translating movement along said row of switch elements, said magnet selectively slidable into operative relation with each of said switch elements, said magnet when in operative relation with a switch element adapted to move the same to bring it into engagement with the contact of its associated binding post, a handle connected with said magnet for sliding it, means pivotally mounting the handle whereby it extends toward the edge of the body along which said binding posts are arranged, means connecting the handle with the magnet ,to slide the latter as the handle is moved on its pivot, and said last means including means whereby the position of the handle may be reversed to have it extend toward the opposite edge of the body.

16. In a switch, a hollow body having an open side, a pair of normally spacedswitch elements in said body and of which one is movable into engagement with the other to close a circuit, a closure on the open side of said body, a rod carried by said closure and arranged within said body, a magnet slidable on said rod between an operative position and an inoperative position relative to said switch elements, a pivotally mounted hand piece disposed at the outer side of said closure, a bar within said body and connected to move with said hand piece, a connection between the magnet and said bar whereby as the hand piece is given a pivotal movement the magnet is shifted along said rod, said magnet when in operative position adapted to attract one of said switch elements to bring the switch elements into circuit closing engagement, said handle extending toward one .edge of'the body and having a portion straddling said bar, means securing the handle and bar together in such. relation, and said means adapted to be released to permit the handle to be shifted to extend toward the other edge of the body and then be again secured in position with its said portion straddling the bar.

' HARVEY HUBBELL, JR.

CHARLES E. AVERY.

CERTIFICATE OF CORREC TION.

Patent No. 2,070,599

of the above numbered patent requiring correction as follows:

February 16, 1937.

HARVEY HUBBELL, JR. ET AL.

It is hereby certifiednt'n'at error appears in the printed s ecification Page 3,

first column, line 66, for the word "other" read outer, and line 70, for

"bar 13" read bar 113; page 4 second column, line 65, claim 3, strike out the period at the end of the line; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 8th day of June, A. D. 1937.

(Seal) Henry Van Arsdale Acting Commissioner ofPatents.

' said kick-off means including acam portion to enary switch element, a kick-off means movable in accordance with movement of the magnet, and

gage said movable switch element and force it "away from the stationary switch element should the movable switch element fail to move to open the circuit on movement of the magnet out of operative position.

13. In a switch, a body, a stationary switch element on said body, a movable switch element on said body and normally spaced from said stationary switch element and including spring means whereby it automatically returns to normal position on being released after having been moved from normal position, a magnet, means mounting the magnet for movement in the body between operative and inoperative positions relative to said switch elements, means for shifting said magnet, said magnet when inoperative position adapted to attract the movable switch element and move it into contact with the stationary side, a pair of normally spaced switch elements in said body and of which one is'movable into engagement with the other to close a circuit, a closure on the open side of said body, two pairs of arms carried by said closurev and extending into said body, parallel rods carried one by each of said pair of arms, a pair of connecting portions each connecting an arm of one of said pair of arms with an arm of said other pairs whereby to brace said arms, a magnet slidable on said rods between operative and inoperative positions relative to said switch elements, means to slide said magnet on said rods, and said magnet when in operative position adapted to attract one of said switch elements to bring the switch elements into circuit closing engagement.

15. In a switch, a body, a series of binding posts arranged in a substantially straight row along one edge of said body, a contact carried by each of ,said binding posts, a series of movable switch elements arranged in substantially a straight row and associated-one with each of said binding posts, means whereby said switch elements. are normally spaced from the contacts of the binding posts and are returned to normal position on being released after having been moved, a magnet, means slidably mounting the magnet in said body for translating movement along said row of switch elements, said magnet selectively slidable into operative relation with each of said switch elements, said magnet when in operative relation with a switch element adapted to move the same to bring it into engagement with the contact of its associated binding post, a handle connected with said magnet for sliding it, means pivotally mounting the handle whereby it extends toward the edge of the body along which said binding posts are arranged, means connecting the handle with the magnet ,to slide the latter as the handle is moved on its pivot, and said last means including means whereby the position of the handle may be reversed to have it extend toward the opposite edge of the body.

16. In a switch, a hollow body having an open side, a pair of normally spacedswitch elements in said body and of which one is movable into engagement with the other to close a circuit, a closure on the open side of said body, a rod carried by said closure and arranged within said body, a magnet slidable on said rod between an operative position and an inoperative position relative to said switch elements, a pivotally mounted hand piece disposed at the outer side of said closure, a bar within said body and connected to move with said hand piece, a connection between the magnet and said bar whereby as the hand piece is given a pivotal movement the magnet is shifted along said rod, said magnet when in operative position adapted to attract one of said switch elements to bring the switch elements into circuit closing engagement, said handle extending toward one .edge of'the body and having a portion straddling said bar, means securing the handle and bar together in such. relation, and said means adapted to be released to permit the handle to be shifted to extend toward the other edge of the body and then be again secured in position with its said portion straddling the bar.

' HARVEY HUBBELL, JR.

CHARLES E. AVERY.

CERTIFICATE OF CORREC TION.

Patent No. 2,070,599

of the above numbered patent requiring correction as follows:

February 16, 1937.

HARVEY HUBBELL, JR. ET AL.

It is hereby certifiednt'n'at error appears in the printed s ecification Page 3,

first column, line 66, for the word "other" read outer, and line 70, for

"bar 13" read bar 113; page 4 second column, line 65, claim 3, strike out the period at the end of the line; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 8th day of June, A. D. 1937.

(Seal) Henry Van Arsdale Acting Commissioner ofPatents. 

